Buttseaming, flat stitch Machine particularly suitable for woven fabrics with medium & heavy weights. Fabric traction system by spiked disk. Some types of knitted fabrics and light woven can be processed as well. Standard electric motor, pneumatic motor and battery operated models are offered. In order to obtain extremely accurate and straight seams, this type of sewing head is also provided with the linear rail model, named TC14L. The working cycle, completely automatic, occurs in two synchronized stages: (1) brushes pinning & ends cutting, (2) sewing process. This machine also allows getting three different stitches: distanced side-to-side or overlapped.